http://smogon.com/bw/pokemon/scizor
QC: [3/3]
GP: [2/2]
Sorry this ended up being so long for a skeleton, but I feel as though a lot of choices on this set need explaining.
[SET]
name: Choice Scarf
move 1: U-turn
move 2: Iron Head / Bullet Punch
move 3: Superpower
move 4: Aerial Ace / Pursuit
item: Choice Scarf
ability: Technician
nature: Jolly
evs: 252 Atk / 4 SpD / 252 Spe
[SET COMMENTS]
<p>With a Choice Scarf equipped, Scizor goes from a strong priority abuser to a speedy revenge killer that can check an array of common offensive Pokemon. However, the lack of both raw power and defensive investment means that Choice Scarf Scizor must be played with more care, picking off opposing Pokemon here and there to give the user the upper hand.</p>
<p>Choice Scarf and U-turn together allow Scizor to outspeed and OHKO Psychic-types such as Celebi, Alakazam, and offensive Starmie. Scizor will also score an OHKO on Latios after Stealth Rock, and will remove a severe chunk of Latias's HP. U-turn will also still play its normal role of keeping momentum, taking advantage of switches. Iron Head provides a second STAB move, and will typically OHKO Terrakion after Stealth Rock damage. With Scizor's increased Speed, Iron Head's 30% flinch chance also becomes more useful. Furthermore, Iron Head can act as a late game cleaning move when the opponent's team is weakened, as Scizor can often outspeed and then finish off threats. The flinch chance and increased power are the main reasons to use Iron Head over Bullet Punch, but the latter is an option if you are desperate for some form of priority move.</p>
<p>Superpower is mostly for Tyranitar, Lucario, and Magnezone; it also allows Scizor to deal with weakened non-Choice Scarf Heatran. Aerial Ace enables Scizor to revenge kill Virizion and Breloom, as well as OHKOing Infernape and Volcarona after Stealth Rock. It is worth noting that Scizor can outspeed neutral +1 Volcarona who use less than 60 Speed EVs, making it an especially decent check to slower but bulkier Volcarona (assuming Stealth Rock is in play). Pursuit is a solid alternative to remove weakened Psychic- and Ghost-types, but it tends to detract from Scizor's ability to straight up OHKO quick and frail Pokemon.</p>
[ADDITIONAL COMMENTS]
<p>The lack of power inevitably means that Scizor is stopped by defensive Pokemon often, meaning bulkier teams will find it easier to set up entry hazards. For this reason, Scizor is best paired with fierce offensive Pokemon that can power their way through stall teams. In return, Scizor can revenge kill the fast threats that may outspeed and check Scizor's powerful teammates, allowing another teammate to sweep unopposed. It is this synergy that creates a useful combination against most teams. As an example, the likes of mixed Infernape and Salamence can help beat stall, whereas Scizor can remove their common checks, such as Starmie, Latios, and Virizion, who can be found on more offensive teams.</p>